Dental plate



y 1934- F. HAUPTMEYER 1,968,765

DENTAL PLATE Filed June 20, 1932 Patented July 31, 1934 DENTAL PLATE Friedrich Hauptmeyer, Essen-Bredeney, Germany,assignor to Fried. Krupp Aktiengesellschaft, Essen-on-the-Ruhr, Germany Application June 20, 1932, Serial No. 618,385 In Germany July 1, 1931 5 Claims. (01. a2-2) My invention relates to dental plates, especially palatal plates, manufactured by swaging and composed of a full main plate and a roofless reinforcing plate or brim which constitutes a duplication of the corresponding part of the main plate, the finished plate thus having on its edges a greater wall thickness than on the palatal part or roof.

I am aware that palatal dental plates are known which are composed of severalparts. In these known plates, however, a reinforcing duplicate brim is applied to the palatal side of a main plate and has for its object to improve the effect of a suction chamber provided in the main. plate. For this purpose, the reinforcing brim is arranged upon the palatal side of the main plate, and, in addition, the brim must have a comparatively great thickness, in order to obtain a satisfactory enlargement of the distance existing between the suction chamber provided in the main plate and the mucous tissue of the natural palateof the wearer. This structure suffers from the drawback of the reinforcing brim being very difiicult to swage and of the finished plate being elastic to only a very slight degree, so that it adheres in the mouth almost exclusively by the effect of the suction chamber. This suction eifect, however, is seriously impaired, if,'as it occurs oft times, the palatal mucous tissue gradually penetrates into the suction chamber and fills it.

My present invention has for its object a palatal dental plate which possesses a roofless reinforcing plate or brim, formed as a closed continuous frame, exactly fitting on the corresponding part of the main plate, in which, however, the drawbacks hereinbefore explained are avoided. I attain this object by applying the reinforcing brim to the lingual side of the main plate.

In order that my invention may be clearly understood and readily carried into effect, an embodiment of the same is illustrated by way of example in the accompanyingdrawing in which Figure 1 is a View of the finished plate, seen from the lingual side,

Figure 2 is a section on line 2--2 of Figure 1, seen in the direction of the arrow a",

Figure 3 is a section on line 3--3 of Figure 1, seen in the direction of the arrow y Figure 4 is a view of the lingual side of the main plate separately, and

Figure 5 is a similar View of the roofless reinforcing plate or brim.

Referring to these figures, A denotes the main plate and B the reinforcing plate which instead of a roof has a recess b so as to form merely a brim, as best to be seen in Figure 5.

In manufacturing the new dental plate, I swage the two pieces A, B successively, the main plate A being swaged first by means of the matrix. Thereupon the roofless plate or frame B is swaged on the matrix with the main plate while the latter rests on the matrix. This done, the two plates A and B are united. The plates preferably consist of a non-corroding steel alloy, in which case the juncture between them is effectively established by resistance welding. The further treatment of the plate is as usual.

The described construction and manufacture of dental plates affords the possibility of improving the elasticity of the finished plate and thus its good fit in the mouth, because of the fact that the main plate may have an extremely small wall thickness so that it can very exactly be adapted to the matrix. When non-corroding steel is used, the thickness of the plate sheet may amount only to 0.2 mm. In addition, owing to this very small thickness of the main plate, the plate wears very conveniently in the mouth. On the other hand, my new plate structure allows of the gum-supporting part of the main plate being reinforced in any desired degree on its outer side, that means where the artificial teeth are to be applied, by selecting for the reinforcing brim thatwail thickness which is best suited to meet the conditions of the special case.

What I claim and desire to secure by Letters Patent is:

1. A swaged palatal dental plate comprising a full main plate and a roofless reinforcing plate formed as a closed continuous frame mounted upon the lingual side of the main plate in direct contact therewith and conforming to the minute surface variations of the mainplate.

2. A swaged palatal dental plate consisting of a non-corroding'steel alloy and comprising a full main plate and a roofless reinforcing plate formed as a closed continuous frame mounted upon the lingual side of the main plate in direct contact therewith and conforming to the minute surface variations of the main plate.

3. A swaged palatal dental plate consisting of a, non-corroding steel alloy and comprising a full main plate and a roofless reinforcing plate formed as a closed continuous frame resistance welded on the lingual side of the main plate in direct contact therewith and conforming tothe minute surface variations of the main plate.

4. The method of manufacturing a dental plate consisting of a non-corroding steel alloy and having a full main plate and a roofless reinforcing plate formed as a closed continuous framemounted upon the lingual side of the main plate, which comprises swaging the main plate on the matrix, and subsequently swaging the reinforcing plate upon the swaged main plate supported on the matrix.

5. The method of manufacturing a dental plate consisting of a non-corroding steel alloy and 

